CN205781553U - Resisting fatigue alternation high pressure self-tightening flange - Google Patents
Resisting fatigue alternation high pressure self-tightening flange Download PDFInfo
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- CN205781553U CN205781553U CN201620478900.1U CN201620478900U CN205781553U CN 205781553 U CN205781553 U CN 205781553U CN 201620478900 U CN201620478900 U CN 201620478900U CN 205781553 U CN205781553 U CN 205781553U
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- sealing ring
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- cutting ferrule
- resisting fatigue
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Abstract
This utility model relates to a kind of resisting fatigue alternation high pressure self-tightening flange, including two set joints, sealing ring and cutting ferrule, one end of set joint is shaped with the connection dish of annular, two set joints mutually abut at connection Pan Chu, are provided with convex tendon outside sealing ring, and sealing ring is arranged on the inner side at connection dish mutually abutting, the convex tendon of sealing ring is between two connection dishes, cutting ferrule is annular, and card is arranged with and is suitable to block two draw-in grooves connecting plate edge, and two connection dishes are by draw-in groove clamping.Resisting fatigue alternation high pressure self-tightening flange of the present utility model is after two set joints are by cutting ferrule clamping, pressure is pressed on the convex tendon of sealing ring, the inner surface making sealing ring produces elastic deformation thus deviates the interior sealing surface of set joint, the load in this deviation flexibly grip joint inner sealing face returns on sealing ring, forms a self-enhancement type elastic packing.
Description
Technical field
This utility model relates to a kind of resisting fatigue alternation high pressure self-tightening flange, belongs to technical field of pipeline connection.
Background technology
Flange is again ring flange or bead, makes pipe and the interconnective part of pipe, is connected to pipe end.Perforation on flange, can wear bolt, it is common that refer to open several fixing hole for connecting other thing at the periphery of the metallic object of a similar plate-like.Existing Flange joint is exactly two pipelines, pipe fitting or equipment, is first individually fixed on a ring flange, between two ring flanges, adds flange gasket, tighten together with bolt, completes to connect.Flange joint is the important connected mode of pipeline construction, and Flange joint is easy to use, it is possible to bear bigger pressure, and in industrial pipeline, the use of Flange joint is quite varied.
At present, during petrochemical industry produces, connecting of pipeline is mainly realized by flange, pad, bolt, nut combination.
In using, the hardness of metallic gasket material is the most all softer than flange, under bolt pretightening effect, makes sealing gasket be squeezed deformation, and on sealing surface, rough microgap is filled, and prevents dielectric leakage, to reach the effect sealed, belongs to " soft seal ".
Owing to sealing surface is perpendicular to pipe centerline, connecting bolt is parallel to pipe centerline, and this just certainly will bring following two impacts:
When A, work, pipeline is intrinsic pressure will make sealing surface relax along duct orientation, thus reduce junction sealing property, therefore, bolt load under pretension condition when certainly will increase installation, thus also increase the flange moment of flexure that ring flange can bear accordingly, so the physical dimension of flange the most just seems thick；
B, it is parallel to duct orientation due to connecting bolt, the most produced tubing additional load, such as: pipeline Compression and Expansion, pressure oscillation, moment of flexure, moment of torsion, impact etc., to first directly be undertaken by flange bolt, again result in the decline of Flange joint pretensioning effect, and affect the sealing property of connection.
Here it is conventional flange tubing (particularly under temperature, pressure alternation) is difficult to stop completely the basic reason of run, drip, leak.
Utility model content
The technical problems to be solved in the utility model is, not enough for prior art, proposes a kind of sealing exsertile resisting fatigue alternation high pressure self-tightening flange.
This utility model is that the technical scheme solving the proposition of above-mentioned technical problem is: a kind of resisting fatigue alternation high pressure self-tightening flange, including two set joints, sealing ring and cutting ferrule, one end of set joint is shaped with the connection dish of annular, two set joints mutually abut at connection Pan Chu, convex tendon it is provided with outside sealing ring, sealing ring is arranged on the inner side at connection dish mutually abutting, the convex tendon of sealing ring is between two connection dishes, cutting ferrule is annular, card is arranged with and is suitable to block two draw-in grooves connecting plate edge, and two connection dishes are by draw-in groove clamping.
The improvement of technique scheme is: connection dish is shaped with, for the one side abutted, the groove that the convex tendon with sealing ring matches, and the degree of depth of groove is the half of the convex tendon thickness of sealing ring.
The improvement of technique scheme is: cutting ferrule is two, and two cutting ferrules are symmetrical arranged composition annular.
The improvement of technique scheme is: also include screw bolt and nut, two cutting ferrule docking sites have been respectively and fixedly connected with contiguous block, at least one installing hole is offered on contiguous block, bolt sequentially passes through the installing hole of two corresponding contiguous blocks and is connected with nut thread, and the axis of bolt is mutually perpendicular to the axis of set joint.
The improvement of technique scheme is: offer two installing holes on contiguous block.
The improvement of technique scheme is: the cross section of the draw-in groove of cutting ferrule is trapezoidal, and the opposing side of two connection dishes is the conical surface that the sidewall with draw-in groove fits.
The application process of the resisting fatigue alternation high pressure self-tightening flange of the present invention, comprises the following steps:
A, welding: the welding ends of two set joints is welded with pipeline or equipment respectively；
B, installation sealing ring: sealing ring is arranged on the connection Pan Chu of set joint, and the convex tendon of sealing ring is arranged in the groove of connection dish, then the connection dish of two set joints is mutually abutted；
C, install cutting ferrule: draw-in groove cutting ferrule within set joint be connected dish taper-face contact position be coated with grease be easily installed, two cutting ferrules are symmetrical arranged, by two overlap save connection dish snap in draw-in groove；
D, installation bolt and nut: fastening nut is the most uniformly tightened by the mode of diagonal angle order, and ensure two cutting ferrule symmetries, use torque wrench fastening nut, after tightening, wooden mallet or copper rod is used to beat cutting ferrule, make cutting ferrule really put in place, clamping, the most again fastening nut, the most repeatedly 1-3 time until when tightening moment of torsion no longer have new change.
This utility model uses technique scheme to provide the benefit that:
(1) owing to being provided with convex tendon outside sealing ring, sealing ring is arranged on the inner side at connection dish mutually abutting, and the convex tendon of sealing ring is between two connection dishes；After two set joints are by cutting ferrule clamping, pressure is pressed on the convex tendon of sealing ring, the inner surface making sealing ring produces elastic deformation thus deviates the interior sealing surface of set joint, and the load in this deviation flexibly grip joint inner sealing face returns on sealing ring, forms a self-enhancement type elastic packing；After resisting fatigue alternation high pressure self-tightening flange seal ring is installed and fixed, the sealing ring under stress is smaller in size than the size under free state, forms pressure F at inner surface, and this pressure can strengthen along with the increase of internal pressure；
(2) convex tendon of sealing ring also acts as the effect strengthened and install location, and after flange assembles, the convex tendon of sealing ring is clamped tubular with mother integral by two set joints, improves the intensity of connecting portion dramatically；
(3) due to the resisting fatigue alternation high pressure self-tightening flange of the present invention, there is function of self-tightening, during work, pipeline is intrinsic pressure will not make sealing surface relax along duct orientation, thus reduce junction sealing property, therefore, bolt load under pretension condition is reduced during installation, thus also reduce the flange moment of flexure that ring flange is born accordingly, so resisting fatigue alternation high pressure self-tightening flange has volume little (the most common same pressure rating, the 1/3 of same specification flange), lightweight (the most common same pressure rating, the 1/4 of same specification flange)；
(4) it has been respectively and fixedly connected with contiguous block due to two cutting ferrule docking sites, installing hole is offered on contiguous block, bolt sequentially passes through the installing hole of two corresponding contiguous blocks and is connected with nut thread, the axis of bolt is mutually perpendicular to the axis of set joint, owing to connecting bolt is perpendicular to duct orientation, the most produced tubing additional load, such as: pipeline Compression and Expansion, pressure oscillation, moment of flexure, moment of torsion, impact etc., will not directly be undertaken by bolt, thus it is not result in the decline of Flange joint pretensioning effect, and affect the sealing property of connection；
(5) it is trapezoidal due to the cross section of the draw-in groove of cutting ferrule, the opposing side of two connection dishes is the conical surface that the sidewall with draw-in groove fits, when internal pipe pressure increases, the opposing side of two connection dishes also increases with the pressure of the sidewall of the draw-in groove of cutting ferrule, so that the power of draw-in groove feedback increases, make the tightr of two connection dishes abuttings, thus also play self-tightening effect, effectively prevent when internal pipe pressure increases, Flange joint position produces and loosens, thus produce the leakage of medium, make sealing property more prominent, resisting fatigue alternation high pressure self-tightening flange is made to have the advantages that pressurized more high sealing performance is the best.
Accompanying drawing explanation
The utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of this utility model embodiment resisting fatigue alternation high pressure self-tightening flange；
Fig. 2 is the structural representation of the cutting ferrule of this utility model embodiment resisting fatigue alternation high pressure self-tightening flange；
Fig. 3 is the structural representation of the set joint of this utility model embodiment resisting fatigue alternation high pressure self-tightening flange；
Fig. 4 is the structural representation of the sealing ring of this utility model embodiment resisting fatigue alternation high pressure self-tightening flange；
Wherein: 1-overlaps joint；1.1-the conical surface；1.2-connection dish；1.3-groove；2-sealing ring；2.1-convex tendon；3-cutting ferrule；4-installing hole；5-draw-in groove；6-contiguous block；7-bolt；8-nut.
Detailed description of the invention
Embodiment
The resisting fatigue alternation high pressure self-tightening flange of the present embodiment, as Figure 1-4, including two set joints 1, sealing ring 2 and cutting ferrule 3, one end of set joint 1 is shaped with the connection dish 1.2 of annular, two set joints 1 mutually abut at connection Pan1.2Chu, it is provided with convex tendon 2.1 in the middle of sealing ring 2 is outside, sealing ring 2 is arranged on the inner side at connection dish 1.2 mutually abutting, the convex tendon 2.1 of sealing ring 2 is between two connection dishes 1.2, cutting ferrule 3 is annular, cutting ferrule 3 is provided with the draw-in groove 5 being suitable to block two connection dish 1.2 edges, and two connection dishes 1.2 are by draw-in groove 5 clamping；Connection dish 1.2 is shaped with, for the one side abutted, the groove 1.3 that the convex tendon 2.1 with sealing ring 2 matches, and the degree of depth of groove 1.3 is the half of convex tendon 2.1 thickness of sealing ring 2；Cutting ferrule 3 is two, and two cutting ferrules 3 are symmetrical arranged composition annular；Also include bolt 7 and nut 8, two cutting ferrule 3 docking sites have been respectively and fixedly connected with contiguous block 6, offering two installing holes 4 on contiguous block 6, bolt 7 sequentially passes through the installing hole 4 of two corresponding contiguous blocks 6 and threadeds with nut 8, and the axis of bolt 7 is mutually perpendicular to the axis of set joint 1；The cross section of the draw-in groove 5 of cutting ferrule 1 is trapezoidal, and the opposing side of two connection dishes 1.2 is the conical surface 1.1 that the sidewall with draw-in groove 5 fits.
The application process of resisting fatigue alternation high pressure self-tightening flange of the present utility model, comprises the following steps:
A, welding: the welding ends of two set joints is welded with pipeline or equipment respectively；
B, installation sealing ring: sealing ring is arranged on the connection Pan Chu of set joint, and the convex tendon of sealing ring is arranged in the groove of connection dish, then the connection dish of two set joints is mutually abutted；
C, install cutting ferrule: draw-in groove cutting ferrule within set joint be connected dish taper-face contact position be coated with grease be easily installed, two cutting ferrules are symmetrical arranged, by two overlap save connection dish snap in draw-in groove；
D, installation bolt and nut: fastening nut is the most uniformly tightened by the mode of diagonal angle order, and ensure two cutting ferrule symmetries, use torque wrench fastening nut, after tightening, wooden mallet or copper rod is used to beat cutting ferrule, make cutting ferrule really put in place, clamping, the most again fastening nut, the most repeatedly 1-3 time until when tightening moment of torsion no longer have new change.
The resisting fatigue alternation high pressure self-tightening flange of the present embodiment has the advantage that
(1) resisting fatigue alternation high pressure self-tightening flange has volume little (the most common same pressure rating, the 1/3 of same specification flange), lightweight (the most common same pressure rating, the 1/4 of same specification flange)；
(2) resisting fatigue alternation high pressure self-tightening flange sealing property is more prominent, has the advantages that pressurized more high sealing performance is the best；
(3) resisting fatigue alternation high pressure self-tightening flange has the feature of the bad working environments condition that adapts to (such as temperature and pressure alternate, high temperature resistant, high pressure resistant)；
(4) self-tightening high pressure flange system easy accessibility, it is easy to install (only four set bolt/nut)；
(5) self-tightening high pressure flange system screwing force little (the most common same pressure rating, the 3/4 of same specification flange).
The scope of application of resisting fatigue alternation high pressure self-tightening flange:
(1) temperature: be applicable to various high and low temperature environment；
(2) pressure: PN 90MPa, is applicable to various different shape medium；
(3) material: carbon steel, steel alloy, rustless steel, nickel-base alloy etc.；
(4) specification: DN15-DN600.
This utility model is not limited to above-described embodiment.The technical scheme that all employing equivalents are formed, all falls within the protection domain of this utility model requirement.
Claims (6)
1. resisting fatigue alternation high pressure self-tightening flange, it is characterized in that: include two set joints, sealing ring and cutting ferrule, one end of described set joint is shaped with the connection dish of annular, two described set joints mutually abut at connection Pan Chu, it is provided with convex tendon outside described sealing ring, described sealing ring is arranged on the inner side at described connection dish mutually abutting, the convex tendon of described sealing ring is between two described connection dishes, described cutting ferrule is annular, described card is arranged with the draw-in groove being suitable to block two described connection plate edges, and two described connection dishes are by described draw-in groove clamping.
Resisting fatigue alternation high pressure self-tightening flange the most according to claim 1, it is characterised in that: described connection dish is shaped with, for the one side abutted, the groove that the convex tendon with described sealing ring matches, and the degree of depth of described groove is the half of the convex tendon thickness of described sealing ring.
Resisting fatigue alternation high pressure self-tightening flange the most according to claim 2, it is characterised in that: described cutting ferrule is two, and two described cutting ferrules are symmetrical arranged composition annular.
Resisting fatigue alternation high pressure self-tightening flange the most according to claim 3, it is characterized in that: also include screw bolt and nut, two described cutting ferrule docking sites have been respectively and fixedly connected with contiguous block, at least one installing hole is offered on described contiguous block, described bolt sequentially passes through the installing hole of two corresponding contiguous blocks and is connected with described nut thread, and the axis of described bolt is mutually perpendicular to the axis of described set joint.
Resisting fatigue alternation high pressure self-tightening flange the most according to claim 4, it is characterised in that: offer two installing holes on described contiguous block.
Resisting fatigue alternation high pressure self-tightening flange the most according to claim 5, it is characterised in that: the cross section of the draw-in groove of described cutting ferrule is trapezoidal, and the opposing side of said two connection dish is the conical surface that the sidewall with described draw-in groove fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620478900.1U CN205781553U (en) | 2016-05-24 | 2016-05-24 | Resisting fatigue alternation high pressure self-tightening flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620478900.1U CN205781553U (en) | 2016-05-24 | 2016-05-24 | Resisting fatigue alternation high pressure self-tightening flange |
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| CN205781553U true CN205781553U (en) | 2016-12-07 |
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| CN201620478900.1U Active CN205781553U (en) | 2016-05-24 | 2016-05-24 | Resisting fatigue alternation high pressure self-tightening flange |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889670A (en) * | 2016-05-24 | 2016-08-24 | 无锡市华尔泰机械制造有限公司 | Anti-fatigue alternating high-pressure self-tightening flange and application method thereof |
| CN107023724A (en) * | 2017-04-19 | 2017-08-08 | 宁波天生密封件有限公司 | Sealing and connecting device |
| CN107781548A (en) * | 2017-11-29 | 2018-03-09 | 无锡市华尔泰机械制造有限公司 | A kind of high pressure self-tightening flange flushed with internal diameter of the pipeline |
| CN108131516A (en) * | 2017-08-25 | 2018-06-08 | 天津斯林力克密封科技有限公司 | Pipe jointer gasket |
| CN110725948A (en) * | 2019-10-28 | 2020-01-24 | 中原工学院 | Flexible self-sealing self-tightening flange |
| CZ308839B6 (en) * | 2019-11-01 | 2021-06-30 | ŽĎAS, a. s. | Hydraulic piping flange connection |
-
2016
- 2016-05-24 CN CN201620478900.1U patent/CN205781553U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889670A (en) * | 2016-05-24 | 2016-08-24 | 无锡市华尔泰机械制造有限公司 | Anti-fatigue alternating high-pressure self-tightening flange and application method thereof |
| CN107023724A (en) * | 2017-04-19 | 2017-08-08 | 宁波天生密封件有限公司 | Sealing and connecting device |
| CN107023724B (en) * | 2017-04-19 | 2023-12-12 | 宁波天生密封件有限公司 | Sealing connection device |
| CN108131516A (en) * | 2017-08-25 | 2018-06-08 | 天津斯林力克密封科技有限公司 | Pipe jointer gasket |
| CN108131516B (en) * | 2017-08-25 | 2024-05-17 | 天津斯林力克密封科技有限公司 | Sealing gasket for pipeline connector |
| CN107781548A (en) * | 2017-11-29 | 2018-03-09 | 无锡市华尔泰机械制造有限公司 | A kind of high pressure self-tightening flange flushed with internal diameter of the pipeline |
| CN107781548B (en) * | 2017-11-29 | 2023-10-31 | 无锡市华尔泰机械制造有限公司 | High-pressure self-tightening flange flush with inner diameter of pipeline |
| CN110725948A (en) * | 2019-10-28 | 2020-01-24 | 中原工学院 | Flexible self-sealing self-tightening flange |
| CZ308839B6 (en) * | 2019-11-01 | 2021-06-30 | ŽĎAS, a. s. | Hydraulic piping flange connection |
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